Staurogeton trisulcus (L.) Schur; star duckweed; ivy-leaved duckweed) is a species of aquatic plants in the genus Lemna (duckweed) with a subcosmopolitan distribution, occurring in quiet freshwater habitats in cool temperate regions.

IVY-LEAVED DUCKWEED: (Lemna triscula) Small green leaves remain submerged just below the water surface.

Staurogeton trisulcus (L.) Schur; star duckweed; ivy-leaved duckweed) is a species of aquatic plants in the genus Lemna (duckweed) with a subcosmopolitan distribution, occurring in quiet freshwater habitats in cool temperate regions.

Floating on the surface were water fern (Azolla filiculoides) and duckweed (Lemna trisulca).

Three-furrow duckweed (Lemna trisulca)

Field experiments and survey methods were used to assess competition and interaction between Lemna minor L. and Lemna trisulca L. at Delta Marsh, Manitoba.